Effects of Nursery Characteristics on Field Survival and Growth of Loblolly Pine Rooted Cuttings
After assessment, the rooted cuttings and seedlings were established in a randomized block design on a coastal site in southern Beaufort County, North Carolina. Five years after establishment in the field, survival, height, diameter, presence or absence of fusiform rust incidence, number of leaders, and sweep were assessed. Analyses of variance were conducted to detect differences among the putative cull classes. Nursery rooting cutting morphological traits were regressed on fifth year field traits. Iterative logistic regression was performed between the nursery traits (continuous variables) and survival (binary variable).
Overall, fifth year survival of the rooted cuttings was higher than that of the seedlings (77 versus 42%, respectively), and their stem volume was not significantly different from seedlings (0.259 versus 0.285 m3). For the four open-pollinated families studied, these results indicate that no culling standards are needed for rooted cutting planting stock to perform at least as well as seedling planting stock. However, eliminating cuttings with poor foliage coverage (less than 2.5 cm) and culling or pruning rooted cuttings with multiple leaders is recommended to reduce the number of forked trees in the field. South. J. Appl. For. 26(4):207–213.
Keywords: Pinus taeda L.; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; natural resource management; natural resources; planting stock; propagation; regeneration
Document Type: Miscellaneous
Affiliations: North Carolina State University, Campus Box 800 Raleigh, NC, 27695-8002,
Publication date: 2002-11-01
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